The object of the puzzle is to arrange the cards so that each row and each column contains exactly one card of each suit (Clubs, Diamonds, Hearts, Spades) and each value (Ten, Jack, Queen, King).

For example, a valid row might consist of these four cards: KC, QD, JH, 10S.

When solved, you will discover that the same rule also applies to the diagonals of the square and the four corners.

While simple to describe, this puzzle is more difficult than it first appears.

From the 16 playing cards displayed, there are exactly 24 sets of 4 cards that consist of one card of each suit and value.
In fact, each of these 24 sets is represented in the solution to the puzzle, as you will discover.